Hi
I recently bought the hsd 90mm viper pro and according to the recommendations I need a battery of 5000mha 6s 40c.
1. As per your experience, which battery to buy, I've seen a variety of batteries from $ 60 to $ 150 in a matter of reliability, good power, load resistance, and long battery life
2. Which charger fits these batteries, in my opinion one of the features it can simultaneously charge two batteries at the same time, and also has the option of ac / dc
3. Is it possible to change batteries to increase the flight time, ie from 5000 to 6000 or more, and at the same time it is suitable to get up from 40c to more according to the engine I'm using.
I am really new to this and inexperienced, so I would love get help and guidance.
Thank you
Avi

I have had very good luck with this battery. My experience is that these are just as good as similar much more expensive batteries. If you always keep these at the storage charge level when not in use they do not puff.

I have had very good luck with this battery. My experience is that these are just as good as similar much more expensive batteries. If you always keep these at the storage charge level when not in use they do not puff.